Depends on how heavy the material is. Rubber backed carpet sold for speaker enclosures works best with contact cement. That also gives you a pretty long window of time for placing the pieces of material on the box. Low weight material like headliner stuff works well with the spray adhesive made for that purpose - especially 3M's general purpose stuff with it's nifty adjusto-width nozzle. You also get a little more freedom to "readjust" placement with the 3M spray, but it loses its tackiness after about 15 min so you gotta work fast. Stay away from spray glues made for putting photo's in an album, they don't have the holding power you need.